Parallel-ruler.



K. KIMURA.

PARALLEL RULER.

APPucATmN FILED MAY1,.1916.

Patented Deo. 12, 1916.

KENKICI-II KIIVIURA, OF NEW YORK, N. Y.

PARALLEL-RULER.

Specification of Letters Patent.

patented pee.. is, 1ere.

Application filed 1l/[ay 1, 1916. Serial No. 94,820.

To all whom it may concern Be it known that 1, KENKICHI KIMURA, a subject of the Emperor of Japan,residing in New York city, in the county of New York and State of New York, have invented certain new and useful improvements in Parallel-Rulers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.y

rihe present invention relates to a parallel ruler of the roller type, and the principal ebjects of the invention are, providing an improved parallel ruler of the type mentioned useful in connection with either pen or pencil, providing means whereby the ruler may be held rm during use of the drawing instrument while making it easily movable by rolling motion in the process of shifting, and lastly providing means whereby the guiding line, for a pen especially, may be adjusted as to its height above the paper. f

The invention is illustrated in a preferred form in the accompanying drawings7 where- 1n- Figure 1 is a plan view of my improved ruler, Fig. 2 is an end view thereof, and Figs. 3 to 6 are end views showing various possible positions during use.

The device comprises a main or principal roller 10, having bearings in two end pieces 11, 12 which are made long enough to provide bearings for a secondary roller 13, carrying a straight edge 14, preferably provided with ascale, as shown, and preferably sunk into a slot in said roller. Normally the secondary roller revolves easily in its bearings, butthe journals on which it turns are provided with screw threads and nuts 15, 16, whereby the same may be tightened to prevent rotation of the roller 13. Other means for fixing the roller 13 are within the invention. The purpose of thus Vfixing the roller is shown best in Figs. 3

to 5. The figures show that the roller with respect to the angular posi.- tion of the straight edge, this straight edge may be made to support the secondary roller at various vheights above the paper. This makes it possible to use the roller 1 3 to guide drawing or other pens of different kinds and sizes without danger of getting ink on by vadjusting ,Umpires the ruler. It also accommodates the ruler to personal preference in regard to the height o-f the guiding line.

In the position shown in Fig. 5, the roller may be used to guide a pen close to the paper, while the whole ruler is held firmly in place on the drawing paper by pressing the straight edge 14 with the fingers against the main roller 10. This exerts a braking action, preventing rotation of the main roller, whereby the whole is held fixed during use.

in Fig. 6 is shown the position in which the straight edge 111 is used immediately to guide a pencil. During this use the whole ruler is held firm by pressing the straight edge against the paper. If desired the roller 13 may be held rigid in its bearings during normal use, the whole being moved between lines by rolling on the main roller 10.

1.71-1 parallel ruler4 comprising, a main roller, extended side bearing pieces for the same adapted to be rotated around the journals thereof, a secondary roller also having bearings in said bearing pieces, and a straight edge fixed to said secondary roller.

2. A parallel ruler comprising, a main roller, extended side bearing pieces for the same adapted to be rotated around the journals thereof, a secondary roller also having bearings in said bearing pieces, and a straight edge firmly fitted into a slot in said v secondary roller.

3. A parallel ruler comprising, a main roller, extended side bearing pieces for the same adapted to be rotated around the jour nals thereof, asecondary roller also having bearings in said bearing pieces, a straight edge fixed to said secondary roller, and means Afor preventing rotation of said secondary roller in its bearings at will.

1. A parallel vruler comprising, a main roller, extended side bearing pieces for the same adapted to be rotated around the journals thereof, a secondary roller also having bearings in said bearing pieces, a straight edge fixed to said secondary roller, and nuts screwing onto the journals of said secondary roller and adapted to be tightened sogas to prevent rotation of said roller.

In testimony whereof, lf have affixed my signature.

KENKICHI KIMURA.

the "Qgnlirn'issioner of Patents, 

